Islamist militants’ mass hostage-taking at a natural gas facility in southern Algeria remains murky, as do the Algerian military’s efforts Thursday to free the captives, but one result of the violence is already clear: The episode expands the scope of the battle with Al Qaeda-affiliated Islamist extremists in North Africa.

The hostage crisis drags Algeria, a major oil and gas producer with a bloody history of fighting home-grown Islamist militants, onto center stage in the regional battle – a place it has tried to avoid in recent months.

And in part because of the large number of nationalities among the hostages, the international community is now involved in North Africa’s anti-Islamist fight in a way that France’s intervention last week in Algeria’s neighbor Mali – an intervention designed to head off Mali’s fall to radical Islamists – had not immediately provoked.

With reports Thursday afternoon that at least two of perhaps seven American hostages had escaped their captors and were on their way home, the United States was involved in the crisis both on the ground and diplomatically. Pentagon officials confirmed that the US had deployed unmanned drones to monitor and report on the fast-moving crisis, while Secretary of State Hillary Rodham Clinton has kept informed through phone conversations Wednesday and Thursday with Algerian Prime Minister Abdelmalek Sellal.